11205613 has 2 divisors, whose sum is σ = 11205614. Its totient is φ = 11205612.

The previous prime is 11205589. The next prime is 11205619. The reversal of 11205613 is 31650211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6953769 + 4251844 = 2637^2 + 2062^2 .

It is a cyclic number.

It is not a de Polignac number, because 11205613 - 2¹⁷ = 11074541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11205619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5602806 + 5602807.

It is an arithmetic number, because the mean of its divisors is an integer number (5602807).

Almost surely, 2^11205613 is an apocalyptic number.

It is an amenable number.

11205613 is a deficient number, since it is larger than the sum of its proper divisors (1).

11205613 is an equidigital number, since it uses as much as digits as its factorization.

11205613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 11205613 is about 3347.4786033670. The cubic root of 11205613 is about 223.7751583708.

Adding to 11205613 its reverse (31650211), we get a palindrome (42855824).

The spelling of 11205613 in words is "eleven million, two hundred five thousand, six hundred thirteen".